## candice1 3 years ago simplify the sum. 1.(8u^3+6u^2+8)+(3u^3-6u+8) simplify the defference. 1. (7w^2-7w-3)-(2w^2+5-2) 2. (8w^2-6w-7)-(3w^2+3w-4) find the GCF of the terms of the polynomial. 1.18x^3+24x^2 CAND SOMEBODY HELP ME PLAESE.!!!!!??//??/

1. eSpeX

What is it you do not understand? For the first three problems you need only combine like terms and for the last one you find the greatest value they have in common.

2. candice1

imm doin work i have never seen until yesterday lol.

3. eSpeX

I'm sure you understand what "like terms" are, so looking at the problems one at a time, combine all of the like terms, once that is accomplished it will be in its simplified form.

4. candice1

thats it???? okay thanks:)

5. eSpeX

:) You're welcome.

6. estudier

For the GCF, you want the expression that divides both (which is "in" both). You can do it in bits, GCF of 18 and 24? (The biggest number that divides both)

7. candice1

thanks.

8. estudier

Come on, tell me what you get...

9. candice1

24???????????????:(

10. eSpeX

What if you think of it like this: 18x^3 = 2*3*3 x*x*x

11. candice1

immm sorrry! imm very dumb in math.

12. estudier

Well, you can't divide 24 into 18 (you can but the answer wont be an integer). A systematic way to find the GCF is to factor the numbers like this 24/2 = 12, 12/2 = 6, 6/2 = 3 so 24 = 2*2*2*3

13. estudier

Ah, EspeX says the same....

14. eSpeX

@estudier has this well in hand. :)

15. estudier

eSpeX

16. estudier

So 24 = 2*2*2*3 and 18 = 2*3*3 To get the GCF you want to "take out" the bits that are in both. Can you see how?

17. candice1

okay i see what you are saying now.

18. estudier

So for instance there are two 3's in 18 but only one in 24 so you can take out one of them.

19. candice1

okay.

20. estudier

21. estudier

r u still there?

22. estudier

I guess not.

23. candice1

is the answer to the problem 6?

24. candice1

lol imm still here i just had to run to the restroom.

25. estudier

That's the correct answer to the GCF of 24 and 18. Now the next bit, we sort of do it the same. What's the bit of x^3 and x^2 that is "in" both?

26. estudier

remember x^3 is x*x*x and x^2 = x*x

27. candice1

are you giving me another math problem to work? lol

28. estudier

It's just the same only with x's instead of 2's or 3's We are still on your original GCF question.

29. candice1

id get it?? write it out for me

30. estudier

Write what ?

31. candice1

what you are saying

32. estudier

I thought that's what I was doing....?

33. candice1

lol seee im totally confused

34. estudier

I think you need to do a bit of studying. Try here http://www.purplemath.com/modules/lcm_gcf.htm Thing is, math builds up in layers, if you don't get a layer, you will just have trouble later on.

35. candice1

true true true. thanks soo much for your help.:)

36. estudier

You can try to keep posting your questions to see if someone will just give you the answer but most people will resist answering questions like the first three.

37. estudier

Anyway, good luck.

38. candice1

thanks.